US2026029187A1PendingUtilityA1

Pcm steel sheet for home appliances and refrigerator including the same

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Assignee: SAMSUNG ELECTRONICS CO LTDPriority: Jul 25, 2024Filed: Apr 4, 2025Published: Jan 29, 2026
Est. expiryJul 25, 2044(~18 yrs left)· nominal 20-yr term from priority
Inventors:CHOI JUNGMINRHEE SEOKKIM JIHYUNKIM CHOONGKEONJUNG JOOHYUNKOH YOUNGDEOGSUNG DOSOO
B05D 2508/00B05D 2503/00B05D 2502/00B05D 2202/10B05D 7/53B05D 7/14B05D 5/02F25D 23/028B05D 7/57
57
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Claims

Abstract

A pre-coated metal (PCM) steel sheet for a home appliance may include: a steel sheet; a base coating layer on the steel sheet, the based coating layer including a matting agent and at least one of a melamine curing agent and an isocyanate curing agent; a print layer on the base coating layer; and a clear coating layer on the print layer, wherein the base coating layer may include up to 10 wt % of the matting agent based on a total weight of the base coating layer.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A pre-coated metal (PCM) steel sheet for a home appliance comprising:
 a steel sheet;   a base coating layer on the steel sheet, the base coating layer including a matting agent and at least one of a melamine curing agent and an isocyanate curing agent;   a print layer on the base coating layer; and   a clear coating layer on the print layer,   wherein the base coating layer includes up to 10 wt % of the matting agent based on a total weight of the base coating layer.   
     
     
         2 . The PCM steel sheet of  claim 1 , wherein the base coating layer includes 1 wt % to 20 wt % of the melamine curing agent based on the total weight of the base coating layer. 
     
     
         3 . The PCM steel sheet of  claim 1 , wherein the base coating layer includes 1 wt % to 20 wt % of the isocyanate curing agent based on the total weight of the base coating layer. 
     
     
         4 . The PCM steel sheet of  claim 1 , wherein the base coating layer includes 1 wt % to 3 wt % of the melamine curing agent based on the total weight of the base coating layer and 1 wt % to 3 wt % of the isocyanate curing agent based on the total weight of the base coating layer. 
     
     
         5 . The PCM steel sheet of  claim 1 , wherein a surface tension of the base coating layer is 30 dynes to 60 dynes. 
     
     
         6 . The PCM steel sheet of  claim 1 , wherein the base coating layer includes up to 4 wt % of the matting agent based on the total weight of the base coating layer. 
     
     
         7 . The PCM steel sheet of  claim 1 , wherein the print layer is printed on the base coating layer based on a digital image. 
     
     
         8 . The PCM steel sheet of  claim 1 , wherein a 20-degree gloss of the base coating layer is 30 GU or more. 
     
     
         9 . The PCM steel sheet of  claim 8 , wherein a 20-degree gloss of the clear coating layer is 70 GU or more. 
     
     
         10 . The PCM steel sheet of  claim 8 , wherein a distinctness of image (DOI) of the clear coating layer is 70 or more. 
     
     
         11 . A refrigerator, comprising:
 a main body;   a storage compartment formed inside the main body; and   a door rotatably coupled to the main body and configured to open at least a portion of the storage compartment, the door including a pre-coated metal (PCM) steel sheet including:
 a steel sheet, 
 a base coating layer on the steel sheet, the base coating layer including a matting agent and at least one of a melamine curing agent and an isocyanate curing agent, 
 a print layer on the base coating layer, and 
 a clear coating layer on the print layer, 
 wherein the base coating layer includes up to 10 wt % of the matting agent based on a total weight of the base coating layer. 
   
     
     
         12 . The refrigerator of  claim 11 , wherein the base coating layer includes 1 wt % to 20 wt % of the melamine curing agent based on the total weight of the base coating layer. 
     
     
         13 . The refrigerator of  claim 11 , wherein the base coating layer includes 1 wt % to 20 wt % of the isocyanate curing agent based on the total weight of the base coating layer. 
     
     
         14 . The refrigerator of  claim 11 , wherein the base coating layer includes 1 wt % to 3 wt % of the melamine curing agent based on the total weight of the base coating layer and 1 wt % to 3 wt % of the isocyanate curing agent based on the total weight of the base coating layer. 
     
     
         15 . The refrigerator of  claim 11 , wherein a surface tension of the base coating layer is 30 dynes to 60 dynes. 
     
     
         16 . The refrigerator of  claim 11 , wherein the base coating layer includes up to 4 wt % of matting agent based on the total weight of the base coating layer. 
     
     
         17 . The refrigerator of  claim 11 , wherein the print layer is printed on the base coating layer based on a digital image. 
     
     
         18 . The refrigerator of  claim 11 , wherein a 20-degree gloss of the base coating layer is 30 GU or more. 
     
     
         19 . The refrigerator of  claim 18 , wherein a 20-degree gloss of the clear coating layer is 70 GU or more. 
     
     
         20 . The refrigerator of  claim 18 , wherein a distinctness of image (DOI) of the clear coating layer is 70 or more.

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